The enhancement of photocatalytic performance of yellow tungsten oxide is the improvement of yellow tungsten oxide as a catalyst by compounding it with other semiconductors. Studies have shown that semiconductor recombination improves the photocatalytic performance of photocatalysts by improving the charge separation effect of the system and expanding the corresponding range of its spectrum.
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Studies also found that binary or multiple composite semiconductors, such as TiO2-WO3, show higher photocatalytic activity than single components. For example, the degradation efficiency of methylene blue by TiO2-WO3 is 1.2 times higher than that of a single component. Some experts have suggested that when the content of WO3 is 0.5%, the photocatalytic activity of the TiO2-WO3 catalyst is improved, and the photocatalytic degradation of methyl orange is the best, which is 96.7% higher than that of pure TiO2. This phenomenon can be explained as carrier transport and separation between semiconductors of different energy levels.
